Friction spring draft-rigging for railway-cars.



PATENTED APR. 9, 1907.

J. F. O'CONNOR. FRICTION SPRING DRAFT RIGGING FOR RAILWAY CARS.

APPLICATION FILED DBG.14,1906.

2 SHEETS-SHEET 1,

fyMIEMn PATENTBD APR. 9,1907.

J. F. OOONNOR. FRICTION SPRING DRAFT RIGGING FOR RAILWAY CARS.

APPLICATION TILED DEC.14,1906.

2 SHEETS-SHEET 2.

M NQ W. g

7 To all whom it may concern.-

UNITE-I) sTArns PATENT OFFIC JOHN F. OCONNOR; or CHICAGO, ILLINOIS, ASSIGNOR TO W. H. MINER.

COMPANY, or CHICAGO, ILLINOlS, A CORPORATION OF ILLINOIS.

FRICTION SYPRING DRAFT-RIGGING FOR RAILWAY-CARS- Be it known that I, JOHN F. O'CONNOR, a

. citizen of the United St tes, residing in Chicago, in the county of C ok and State of Illinois, have invented a I ew and useful Improvement in Friction S ring Draft-Rigging -for Railway-Cars, of whic 1 thefollowing is .a specification. 1

My invention relates to friction. spring draft-rigging for railway-cars.

Difli culty has heretofore been experienced in practical use of friction draft-gear owing to the tendency of the spreader or load-distributing mechanism sticking or being uncertain or irregular in action and violent in movement when motion begins, thus greatly reducing the effective absorption of work by the friction-surfaces; and the object of my invention is to provide a simple, strong.- efficient, and durable construction of friction spring draft -rigging I that will practically overcome this objectionable difficulty and enable the friction devices to uniformly and reliably exert or produce a positive prede rel-mined resistance or cushioning eii'ect.

My invention consists in the means I employ to practically accomplish this object or resultthat is to say, it consists, in connection with the draw-bar and draw-bar strap or yoke and the cooperating draft-rigging stops on the car-irame and a direct-acting spring arranged longitudinally of the draw-bar; of a longitudinallymovable friction shell or case and interengaging friction-blocks having inclined or wedging faceswith an antifriction device or'roller interposed between the cooperating inclined or wedging faces of the friction-blocks to prevent sticking andcause the frictionblocks to properly anduniformly act.

My invention also consists inthe novel construction of parts and devices and in the novel combinations of parts and devices herein shown and described.

In the accompanying drawings, forming a part of this specification, Figure l is a central vertical longitudinal section of a friction spring draft-rigging embodying my invention. Fig. 2 is a plan view partly in horizontal section. Fig. 3 is a vertical cross-section on line'3 3 of Fig. 1. Fig. 4 is' a detail perspective view of one of the friction-blocks,

Specification of Letters Patent.

.. Application filed December 14,1906. Serial No. 347,769.

Patented April 9, 1907.

and Fig. 5 is a detail perspective view of the an'tifriction device or roller.

In the drawings, A represents the center sills or framework of the carto which the draft-rigging is applied; B, the draw-bar; B", the draw-bar yoke or strap, and C c the longitudinally-arranged direct-acting draftriggingsprings interposed between the drawbar or draw-bar strap and the stationary draft-rigging stops D. D, which are secured to the center sills or car-framework, preferably by rivets d.

FF are the front and rear followers, adapt.- ed to alternately engage the stops D D and D D and cooperate with the draw-bar and its strap or yoke and the spring 0.

F is a longitudinally movable friction shell or case,v preferably made integral with the rear follower and having inside parallel longitudinally-cxtending friction-faces f and exterior transverse strengthening ribs f, surrounding the friction-face portion of the shell to prevent the friction-blocks G G from bursting or breaking the friction-shell. The friction shell or case F is cut away at its top and bottom walls adjacent to the spring or furnished with openings f to lighten the casting and afford an opening for convenient insertion and removal of the spring C. The shell F is further provided on each side at its bottom with a laterally-projecting guide or flange f to engage the removable bottom tie-plate or guide ll, which is secured by bolts h to the center sills or stationary framcpieces A, to which the draft-rigging is applied.

The friction-blocks ti G have longitudinally-exi ending friction-faces g g in sliding frictional engagement with and parallel to the cooperating friction-faccs f f of the frictionshell F 2 and producing therewith a powerful frictional resistance under both pulling and bufling strains. also provided with inclined or wedging meeting or'adjacent faces 9 9, between which is.

.lhese friction-blocks arepreferably maintained in position by saddles or shouldered ribs g 91 on'the blocks G G.

I prefer to provide the sliding frictionblocks G G with inclined wedging-faces instead of employing two sets of blocks, one set bearing the sliding friction-faces g g and i another separate set bearing the wedgingfaces g g, as it simplifies the construction and reduces the number of parts.

i 11. In a-friction spring .draft-rig ing, the 'zcorn'hination with the draw-bar, raw-bar i'ttap, direct-actingspring in line with they draw -bar, stops and followers, of a longi- 1 ti1dinallymovable friction shell or case, coopio crating sliding friction-blocks having inclined 0r wedging faces, and'an antifriction-roller 1nlterposed between the inclinedor Wedging faces of said blocks and having a rolling ac- 231m, friction s rin draft-rigging, the combination with tile raw-bar, draw-bar strap, direct-actin spring in line with the draw-bar, stops an followers, of a longitudi- 20 nally-movable friction shell or case, cooper- 'tion with the draw-bar and direct-actingspring in line with the draw-bar sliding friction devices and having inclined faces. for forcing the friction-faces of the frict on=..de-

- tion on bothsaidfaces, substantially as speci-' I 5 a 3. In a friction draft-rigging the combinaseated vices together, of a'n'antifriction device interposed between the inclined faces and having.

a rolling action on both said faces, substantially as specified.

4. In a friction draft-rigging, the combination with the draw-bar draft -rigging stops and springs, of friction-blocks having me clined faces, and a roller'interposed between v the inclined faces of adjacent blocks and hav-.

.ing a rolling action on both said faces, substantially as specified.

nation with the draw-bar, draft-rigging' sto s and springs, of friction-blocks having inc inedfaces, and a roller interposed between the inclined faces of adjacent 'blocks and having a rolling action on both said faces,'the adjacent blocks having saddles to support the roller in position, substantially as 6. In a friction draft-rigging, the combi nation with a draw-bar and direct acting spring in linelwith the draw-bar 1movable fIlCblOfIfShGll, of cooperating friction-blocks having inclined or wedging faces, and a roller interposed between the inclined or wedging faces of saidblocks and having a rolling acfied.

JOHN risoco-N oR. Witnesses: I

H. M. MUNDAY, HENRY Love CLi RKE.

- tion on both said faces, substantially as speci-- v ,4-5 5. In a friction draft-rigging, the combi- 

